SAP General Performance benchmarks and SAP Testing have been around since 1993, and the purpose of these benchmarks is essentially to flex the application performance and underlying infrastructure that SAP runs on.

However most generic benchmarks are of little value to many  SAP end customers to establish general performance of their implementation. Actual implementation seriously isn’t run in most suitable benchmark environment, SAP architecture and modules are distinct, configuration, coding, implementation, hardware, DB etc. are all distinct and the customer installation is often highly customized for your corporation and natural environment.

One widely used tool for SAP Testing and SAP Performance testing is the IBM® Rational® Performance Tester Extension for SAP Solutions - this tool allows you to test the performance of SAP R/3 applications. There are some open source performance testing tools that can be used for SAP Testing but often given the complexity of SAP most organisations tend to use commercial performance test tools.

Load Tests are major tests, requiring substantial input from the business, so that anticipated activity can be accurately simulated in a test environment.  If the project has a pilot in production then logs from the pilot can be used to generate ‘usage profiles’ that can be used as part of the testing process, and can even be used to ‘drive’ large portions of the Load Test.

Load testing must be executed on “today’s” production size database, and optionally with a “projected” database.  If some database tables will be much larger in some months time, then Load testing should also be conducted against a projected database.  It is important that such tests are repeatable, and give the same results for identical runs.  They may need to be executed several times in the first year of wide scale deployment, to ensure that new releases and changes in database size do not push response times beyond prescribed SLAs.

What is the purpose of a Load Test?

The purpose of any load test should be clearly understood and documented.  A load test usually fits into one of the following categories:

1. Quantification of risk.  – Determine, through formal testing, the likelihood that system performance will meet the formal stated performance expectations of stakeholders, such as response time requirements under given levels of load.  This is a traditional Quality Assurance (QA) type test.  Note that load testing does not mitigate risk directly, but through identification and quantification of risk, presents tuning opportunities and an impetus for remediation that will mitigate risk.
2. Determination of minimum configuration.  – Determine, through formal testing, the minimum configuration that will allow the system to meet the formal stated performance expectations of stakeholders – so that extraneous hardware, software and the associated cost of ownership can be minimized.  This is a Business Technology Optimization (BTO) type test.

What functions or business processes should be tested?

The following table describes the criteria for determining the business functions or processes to be included in a test.

Example of Load Test Configuration for a web system

The following diagram shows how a thorough load test could be set up using LoadRunner.

The important thing to understand in executing such a load test is that the load is generated at a protocol level, by the load generators, that are running scripts developed with the VUGen tool.  Transaction times derived from the VUGenscripts do not include processing time on the client PC, such as rendering (drawing parts of the screen) or execution of client side scripts such as JavaScript.  The WinRunner PC(s) is utilized to measure end user experience response times.  Most load tests would not employ a WinRunner PC to measure actual response times from the client perspective, but is highly recommended where complex and variable processing is performed on the desktop after data has been delivered to the client.

The LoadRunner controller is capable of displaying real-time graphs of response times as well as other measures such as CPU utilization on each of the components behind the firewall.  Internal measures from products such as Oracle, WebSphere are also available for monitoring during test execution.

After completion of a test, the Analysis engine can generate a number of graphs and correlations to help locate any performance bottlenecks.

Simplified Load Test Configuration for a web system

In this simplified load test, the controller communicates directly to a load generator that can communicate directly to the load balancer.  No WinRunner PC is utilized to measure actual user experience.  The collection of statistics from various components is simplified as there is no firewall between the controller and the web components being measured.

Reporting on Response Time at various levels of load.

Expected output from a load test often includes a series of response time measures at various levels of load, eg 500 users, 750 users and 1,000 users.  It is important when determining the response time at any particular level of load, that the system has run in a stable manner for a significant amount of time before taking measurements.
For example, a ramp-up to 500 users may take ten minutes, but another ten minutes may be required to let the system activity stabilize.  Taking measurements over the next ten minutes would then give a meaningful result.  The next measurement can be taken after ramping up to the next level and waiting a further ten minutes for stabilization and ten minutes for the measurement period and so on for each level of load requiring detailed response time measures.

Conclusion

Apache Jmeter review Need to test your web service, database, FTP- or web server? Both performance and functional testing? Have a look at JMeter. It is free, very intuitive and has all the possibilities you need to automate your work. Another big advantage of JMeter: open source. You can download the source and make modifications to it if you like. Also direct contact with the developers through a mailing list is very handy.

Tip: Combine JMeter with Badboy (http://www.badboy.com.au/) to make it even more powerful! JMeter doesn’t have record & playback functionality. Badboy is the solution. Record the flow in your website, export the recording to a JMeter file, modify it to your needs and use JMeter to test the performance of your site.

Apache Jmeter Functionality

Apache JMeter may be used to test application performance both on static and dynamic resources (files, Servlets, Perl scripts, Java Objects, Data Bases and Queries, FTP Servers and more). It can be used to simulate a heavy load on a server, network or object to test its strength or to analyze overall performance under different load types. You can use it to make a graphical analysis of performance or to test your server/script/object behavior under heavy concurrent load.

What does it do?

Apache JMeter features include:

• Can load and performance test many different server types:
  • Web – HTTP, HTTPS
  • SOAP
  • Database via JDBC
  • LDAP
  • JMS
  • Mail – POP3(S) and IMAP(S)
• Complete portability and 100% Java purity .
• Full multithreading framework allows concurrent sampling by many threads and simultaneous sampling of different functions by separate thread groups.
• Careful GUI design allows faster operation and more precise timings.
• Caching and offline analysis/replaying of test results.
• Highly Extensible:
  • Pluggable Samplers allow unlimited testing capabilities.
  • Several load statistics may be choosen with pluggable timers .
  • Data analysis and visualization plugins allow great extensibility as well as personalization.
  • Functions can be used to provide dynamic input to a test or provide data manipulation.
  • Scriptable Samplers (BeanShell is fully supported; and there is a sampler which supports BSF-compatible languages)

Apache JMeter

Description:

Apache JMeter is a 100% pure Java desktop application designed to load test functional behavior and measure performance. It was originally designed for testing Web Applications but has since expanded to other test functions. Apache JMeter may be used to test performance both on static and dynamic resources (files, Servlets, Perl scripts, Java Objects, Data Bases and Queries, FTP Servers and more). It can be used to simulate a heavy load on a server, network or object to test its strength or to analyze overall performance under different load types. You can use it to make a graphical analysis of performance or to test your server/script/object behavior under heavy concurrent load.

Requirement:

Solaris, Linux, Windows (98, NT, 2000). JDK1.4 (or higher).

benerator

Description:

benerator is a framework for creating realistic and valid high-volume test data, used for (unit/integration/load) testing and showcase setup. Metadata constraints are imported from systems and/or configuration files. Data can be imported from and exported to files and systems, anonymized or generated from scratch. Domain packages provide reusable generators for creating domain-specific data as names and addresses internationalizable in language and region. It is strongly customizable with plugins and configuration options.

Requirement:

Platform Independent

CLIF is a Load Injection Framework

Description:

CLIF is a modular and flexible distributed load testing platform. It may address any target system that is reachable from a Java program (HTTP, DNS, TCP/IP…) CLIF provides 3 user interfaces (Swing or Eclipse GUI, command line) to deploy, control and monitor a set of distributed load injectors and resource consumption probes (CPU, memory…) An Eclipse wizard helps programming support for new protocols. Load scenarios are defined through XML-editing, using a GUI, or using a capture tool. The scenario execution engine allows the execution of up to millions of virtual users per load injector.

Requirement:

Java 1.5 or greater, with enhanced support for Linux, Windows XP, MacOSX/PPC

ContiPerf

Description:

ContiPerf is a lightweight testing utility that enables the user to easily leverage JUnit 4 test cases as performance tests e.g. for continuous performance testing. It is inspired by JUnit 4′s easy test configuration with annotations and by JUnitPerf’s idea of wrapping Unit tests for performance testing, but more powerful and easier to use.

Requirement:

Windows, Mac OSX, Linux, Solaris and all other platforms that support Java 5

curl-loader

Description:

A C-written web application testing and load generating tool. The goal of the project is to provide a powerful open-source alternative to Spirent Avalanche and IXIA IxLoad. The loader uses real HTTP, FTP and TLS/SSL protocol stacks, simulating tens of thousand and hundred users/clients each with own IP-address. The tool supports user authentication, login and a range of statistics.

Requirement:

linux

D-ITG

Description:

D-ITG (Distributed Internet Traffic Generator) is a platform capable to produce traffic at packet level accurately replicating appropriate stochastic processes for both IDT (Inter Departure Time) and PS (Packet Size) random variables.

Requirement:

Linux, Windows

Database Opensource Test Suite

Description:

The Database Opensource Test Suite (DOTS) is a set of test cases designed for the purpose of stress-testing database server systems in order to measure database server performance and reliability.

Requirement:

Linux, POSIX

DBMonster

Description:

DBMonster is an application to generate random data for testing SQL database driven applications under heavy load.

Requirement:

OS Independent

Deluge

Description:

An open-source web site stress test tool. Simulates multiple user types and counts. Includes proxy server for recording playback scripts, and log evaluator for generating result statistics. Note: this tool is no longer under active development although it is still available on Sourceforge. BEWARE: This tool has not been updated since 2002. It remains listed here in case anybody wishes to take it over.

Requirement:

OS independent

Dieseltest

Description:

Dieseltest is a Windows application that simulates hundreds or thousands of users hitting a website. BEWARE: This tool has not been updated since 2001. It remains listed here in case anybody wishes to take it over.

Requirement:

Windows

Faban

Description:

Faban is a facility for developing and running benchmarks, developed by Sun. It has two major components, the Faban harness and the Faban driver framework. The Faban harness is a harness to automate running of server benchmarks as well as a container to host benchmarks allowing new benchmarks to be deployed in a rapid manner. Faban provides a web interface to launch & queue runs, and extensive functionality to view, compare and graph run outputs.

Requirement:

OS independent; JVM 1.5 or later.

FunkLoad

Description:

FunkLoad is a functional and load web tester, written in Python, whose main use cases are functional and regression testing of web projects, performance testing by loading the web application and monitoring your servers, load testing to expose bugs that do not surface in cursory testing, and stress testing to overwhelm the web application resources and test the application recoverability, and writing web agents by scripting any web repetitive task, like checking if a site is alive.

Requirement:

OS independent – except for the monitoring which is Linux specific.

FWPTT load testing web applications

Description:

fwptt is an open source Web application testing program for load testing web applications. It can record normal and AJAX requests. It has been tested on ASP.Net applications, but it should work with JSP, PHP or other.

Requirement:

windows

Grinder

Description:

The Grinder is a Java load-testing framework making it easy to orchestrate the activities of a test script in many processes across many machines, using a graphical console application.

Requirement:

OS Independent

GrinderStone

Description:

GrinderStone is an Eclipse plug-in for Grinder load testing scripts development including debugging, modularity and pretty logging

Requirement:

All

Hammerhead 2 – Web Testing Tool

Description:

Hammerhead 2 is a stress testing tool designed to test out your web server and web site. It can initiate multiple connections from IP aliases and simulated numerous (256+) users at any given time. The rate at which Hammerhead 2 attempts to pound your site is fully configurable, there are numerous other options for trying to create problems with a web site (so you can fix them).

Requirement:

Hammerhead has been used with Linux, Solaris and FreeBSD.

Hammerora

Description:

Hammerora is a load generation tool for the Oracle Database and Web Applications. Hammerora includes pre-built schema creation and load tests based on the industry standard TPC-C and TPC-H benchmarks to deploy against the Oracle database with multiple users. Hammerora also converts and replays Oracle trace files and enables Web-tier testing to build bespoke load tests for your entire Oracle application environment.

Requirement:

Platform Independent (Binaries for Linux and Windows)

httperf

Description:

Httperf is a tool for measuring web server performance. It provides a flexible facility for generating various HTTP workloads and for measuring server performance. The focus is not on implementing one particular benchmark but on providing a robust, high-performance tool that facilitates the construction of both micro and macro level benchmarks. The three distinguishing characteristics of httperf are its robustness, which includes the ability to generate and sustain server overload, support for the HTTP/1.1 and SSL protocols, and its extensibility.

Requirement:

linux (Debian package available), HP-UX, perhaps other Unix

http_load

Description:

http_load runs multiple HTTP fetches in parallel, to test the throughput of a Web server. However, unlike most such test clients, it runs in a single process, to avoid bogging the client machine down. It can also be configured to do HTTPS fetches.

Requirement:

tbc

Iperf

Description:

Iperf was developed by NLANR/DAST as a modern alternative for measuring maximum TCP and UDP bandwidth performance. Iperf allows the tuning of various parameters and UDP characteristics. Iperf reports bandwidth, delay jitter, datagram loss.

Requirement:

Platform Independent

IxoraRMS

Description:

Monitoring tool with great visualization and customization capabilities. It’s quick to install and suitable for use in performance labs.

Requirement:

Windows, Unix

JChav

Description:

JChav is a way to see the change in performance of your web application over time, by running a benchmark test for each build you produce. JChav reads all the JMeter logs from each of your runs (one per build), and produces a set of charts for each test in each run.

Requirement:

JMeter

JCrawler

Description:

Stress-Testing Tool for web-applications. It comes with the crawling/exploratory feature. You can give JCrawler a set of starting URLs and it will begin crawling from that point onwards, going through any URLs it can find on its way and generating load on the web application. The load parameters (hits/sec) are configurable.

Requirement:

OS Independent

loadUI

Description:

loadUI is a tool for Load Testing numerous protocols, such as Web Services, REST, AMF, JMS, JDBC as well as Web Sites. Tests can be distributed to any number of runners and be modified in real time. LoadUI is tightly integrated with soapUI. LoadUI uses a highly graphic interface making Load Testing Fun and Fast.

Requirement:

Any

Lobo, Continuous Tuning

Description:

Lobo is a tool for performance testing and monitoring that allows you to monitor the evolution of performance along the time-line of the project. It was specially designed to be used in agile-iterative and evolutionary approaches.

Requirement:

Java

MessAdmin

Description:

MessAdmin is a light-weight and non-intrusive notification system and HttpSession administration for J2EE Web Applications, giving detailed statistics and informations on the application. It installs as a plug-in to any Java EE WebApp, and requires zero-code modification.

Requirement:

OS Independant

mstone

Description:

Mstone started as a mail performance measurement system but now can test svn, etc. It can simultaneously test SMTP, POP, IMAP, and some HTML based systems. It measures transaction latency in multiple stages, and graphs the combined results from multiple clients.

Requirement:

multiple (perl based)

Multi-Mechanize

Description:

Multi-Mechanize is an open source framework for web performance and load testing. It allows you to run simultaneous python scripts to generate load (synthetic transactions) against a web site or web service.

Requirement:

Any

NTime

Description:

The NTime tool is very similar to NUnit tool to perform repeatable tasks that help managers, architects, developers and testers to test an application against its performance.

Requirement:

Windows 98 or above, .Net framework 1.1 or 2.0

OpenSTA

Description:

A distributed software testing architecture based on CORBA. Using OpenSTA (Open System Testing Architecture) a user can generate realistic heavy loads simulating the activity of hundreds to thousands of virtual users. OpenSTA graphs both virtual user response times and resource utilization information from all Web Servers, Application Servers, Database Servers and Operating Platforms under test, so that precise performance measurements can be gathered during load tests and analysis on these measurements can be performed.

Requirement:

Windows 2000, NT4 and XP

OpenWebLoad

Description:

OpenWebLoad is a tool for load testing web applications. It aims to be easy to use and providing near real-time performance measurements of the application under test.

Requirement:

Linux, Windows

Ostinato

Description:

Ostinato is an open-source, cross-platform packet/traffic generator and analyzer with a friendly GUI. It aims to be “Wireshark in Reverse” and thus become complementary to Wireshark.

Requirement:

Cross-Platform

p-unit

Description:

An open source framework for unit test and performance benchmark, which was initiated by Andrew Zhang, under GPL license. p-unit supports to run the same tests with single thread or multi-threads, tracks memory and time consumption, and generates the result in the form of plain text, image or pdf file.

Requirement:

OS Independent

PandoraFMS

Description:

Pandora FMS is a monitoring Open Source software. It watches your systems and applications, and allows you to know the status of any element of those systems. Pandora FMS could detect a network interface down, a defacement in your website, a memory leak in one of your server application, or the movement of any value of the NASDAQ new technology market. If you want, Pandora FMS could send out SMS message when your systems fails… or when Google’s value drop below US$ 500.

Requirement:

32-bit MS Windows (NT/2000/XP), All POSIX (Linux/BSD/UNIX-like OSes), Solaris, HP-UX, IBM AIX

postal

Description:

SMTP benchmarking tool. It is threaded, uses very little disk I/O (e-mail body content randomly generate text). It has an SMTP source, SMTP sink and POP server load tester (to pull sent mail)

Requirement:

Linux/UNIX; requires C compiler

Pylot

Description:

Pylot is a free open source tool for testing performance and scalability of web services. It runs HTTP load tests, which are useful for capacity planning, benchmarking, analysis, and system tuning. Pylot generates concurrent load (HTTP Requests), verifies server responses, and produces reports with metrics. Tests suites are executed and monitored from a GUI.

Requirement:

Python 2.5+. required.Tested on Windows XP, Vista, Cygwin, Ubuntu, MacOS

Raw Load Tester

Description:

This application calls the URL you select as many times as you choose and tells you how long it took the server to respond. It writes some additional runtime details to the PHP log file so you can optionally do more granular analysis afterwards. Although the server processes most of the statistics, all URL requests come from the browser. You can run as many browsers and workstations simultaneously as you want.

Requirement:

PHP/JavaScript

Seagull

Description:

Seagull is a multi-protocol traffic generator test tool. Primary aimed at IMS protocols, Seagull is a powerful traffic generator for functional, load, endurance, stress and performance tests for almost any kind of protocol. Currently supports Diameter, XCAP over HTTP, TCAP (GSM Camel, MAP, Win) protocols.

Requirement:

Linux/Unix/Win32-Cygwin

Siege

Description:

SIEGE is an http regression testing and benchmarking utility. It was designed to let web developers measure the performance of their code under duress, to see how it will stand up to load on the internet. It lets the user hit a webserver with a configurable number of concurrent simulated users. Those users place the webserver “under siege.” SCOUT surveys a webserver and prepares the urls.txt file for a siege. In order to perform regression testing, siege loads URLs from a file and runs through them sequentially or randomly. Scout makes the process of populating that file easier. You should send out the scout, before you lay siege.

Requirement:

GNU/Linux, AIX, BSD, HP-UX and Solaris.

Sipp

Description:

SIPp is a performance testing tool for the SIP protocol. Its main features are basic SIPStone scenarios, TCP/UDP transport, customizable (xml based) scenarios, dynamic adjustement of call-rate and a comprehensive set of real-time statistics. It can also generate media (RTP) traffic for audio and video calls.

Requirement:

Linux/Unix/Win32-Cygwin

SLAMD

Description:

SLAMD Distributed Load Generation Engine is a Java-based application designed for stress testing and performance analysis of network-based applications.

Requirement:

Any system with Java 1.4 or higher

Soap-Stone

Description:

Network benchmark application which can put your network under load and conduct automatic benchmark and recording activities.

Requirement:

OS Independent

stress_driver

Description:

General-purpose stress test tool.

Requirement:

Windows NT/2000, Linux

TestMaker

Description:

TestMaker from PushToTest.com delivers a rich environment for building and running intelligent test agents that test Web-enabled applications for scalability, functionality, and performance. It comes with a friendly graphical user environment, an object-oriented scripting language (Jython) to build intelligent test agents, an extensible library of protocol handlers (HTTP, HTTPS, SOAP, XML-RPC, SMTP, POP3, IMAP), a new agent wizard featuring an Agent Recorder to write scripts for you, a library of fully-functional sample test agents, and shell scripts to run test agents from the command line and from unit test utilities.

Requirement:

Windows, Linux, Solaris, and Macintosh

TPTEST

Description:

The purpose with TPTEST is to allow users to measure the speed of their Internet connection in a simple way. TPTEST measures the throughput speed to and from various reference servers on the Internet. The use of TPTEST may help increase the consumer/end user knowledge of how Internet services work.

Requirement:

MacOS/Carbon and Win32

Tsung

Description:

Tsung is a distributed load testing tool. It is protocol-independent and can currently be used to stress HTTP, SOAP and Jabber servers (SSL is supported). It simulates complex user’s behaviour using an XML description file, reports many measurements in real time (including response times, CPU and memory usage from servers, customized transactions, etc.). HTML reports (with graphics) can be generated during the load. For HTTP, it supports 1.0 and 1.1, has a proxy mode to record sessions, supports GET and POST methods, Cookies, and Basic WWW-authentication. It has already been used to simulate thousands of virtual users.

Requirement:

Tested on Linux, but should work on MacOSX and Windows.

Valgrind

Description:

Valgrind is an award-winning suite of tools for debugging and profiling Linux programs. With the tools that come with Valgrind, you can automatically detect many memory management and threading bugs, avoiding hours of frustrating bug-hunting, making your programs more stable. You can also perform detailed profiling, to speed up and reduce memory use of your programs.

Requirement:

Linux

Web Application Load Simulator

Description:

LoadSim is a web application load simulator. It allows you to create simulations and have those simulations run against your webserver.

Requirement:

JDK 1.3 or above

Web Polygraph

Description:

Benchmarking tool for caching proxies, origin server accelerators, L4/7 switches, content filters, and other Web intermediaries.

Requirement:

C++ compiler

WebLOAD

Description:

WebLOAD Open Source is a fully functional, commercial-grade performance testing product based on WebLOAD, Radview’s flagship product that is already deployed at 1,600 sites. Available for free download and use, WebLOAD is a commercial-grade open source project with more than 250 engineering years of product development. Companies that require commercial support, additional productivity features and compatibility with third-party protocols have the option of purchasing WebLOAD Professional directly from RadView.

Requirement:

Windows NT/2000/XP

For those projects hosted on SourceForge, the project activity data is updated weekly using live newsfeeds powered by CaRP

Testing your website’s performance was always important, as users will not hang around whilst they wait for your website to load. A slow website is now becoming even more of an issue with the news that Google may take this into account when deciding where your website should rank.

These site performance testing tools aim to make it easy to regularly test and check your website’s performance so that you can then carry out remedial action in order to speed up the time it takes to load each page.

Iometer, an open source tool, available for download from www.iometer.org, can help youidentify this critical infrastructure measure and help you make better decisions about what kind of storage you need or whether your current storage solution can handle increased load, transaction volumes and users.

Iometer actually serves an additional purpose beyond just measuring I/O performance—it can also generate the workload that is used to test the system (this component is called Dynamo). Dyanamo can be configured in a number of ways that allows very granular testing to take place so that it can test multiple scenarios. TheD ynamo component must be installed on each system for which you would like togather performance results.

 Iometer and Dynamo can be installed on the sames ystem in cases where you want to test the data storage performance test tools of the local disk system.

Installing and running Iometer and Dynamo

The Iometer installation under Windows couldn’t be any easier. Simply double-click the downloaded file and accept all of the default options. This installs Iometer onto your system and places a shortcut on your Start Menu.

Iometer is extraordinarily versatile, and the Users Guide is more than 80 pages long. However, a brief overview of some basic configurations and explaination of how to run tests locally.

For a local test, just start Iometer on the machine to which you installed the program. In Figure A below, see the Topologysection at the left. In that section you see BASE2K3, which is the name of themachine (also called a “manager” in Iometer-speak) on which Iometeris running, and Worker 1. A worker is an individual thread run by Dynamo (whichis started automatically when you run Iometer). At the right, the default tab is the Disk Targets tab, which lists the drives that are available to use for tests.

Figure A

Iometer main window – disk targets

For anyIometer test, you must select access specifications from the AccessSpecifications tab inFigure B. The information on this tab specifies the type of IOoperations that will be performed by Iometer, allowing you to customize tests foryour particular application. This example runs tests with 512-byte and 32-KBchunks of data, with read frequency assumptions of 50 percent and 25 percent,respectively. You can customize these assumptions by clicking the New or Editbuttons and creating your own.

Figure B

Access specifications control exactly how tests run

Before yourun your test, you can also change other parameters, such as the length of thetest. For example, if you want to get a true average reading of your disksystem performance, you might want to run the test for hours instead of secondsto guard against running the test at the same time a user is pulling a largefile from the system. Many test parameters can be adjusted by using the TestSetup tab, shown below in Figure C.

Figure C

The test setup tab provides a place to change overall test parameters

Once youconfigure your test, click the green flag on the menu bar to start thingsrunning. Click the Results Display tab to get a real-time view of your runningtest. A sample results display is shown below in Figure D. You can expand a particular result into its own screen bypressing the right-arrow at the right of each test, which results in a screen similar to the one shown in Figure E.

Figure D

The Result Display tab provides quick access to a lot of information

Figure E

Drill down into individual results

This tip is intended to be a very basic introduction to Iometer, a tool that can help you get a measure for your storage system’s performance.

The following Application Performance Testing and Web stress tools are available from Microsoft:Web Capacity Analysis Tool and these can play a key role in WordPress Web Design and other web design london techniques.

• The IIS 6.0 Resource Kit Tools include WCAT 5.2. To download the IIS 6.0 Resource Kit Tools, visit the following Microsoft Web site:
  http://www.microsoft.com/downloads/details.aspx?FamilyID=56fc92ee-a71a-4c73-b628-ade629c89499&DisplayLang=en
• The IIS 7.0 Web Capacity Analysis tool can be downloaded from the following Microsoft Web site:
• http://www.iis.net/downloads/default.aspx?tabid=34&i=1466&g=6

• Visual Studio Team System 2008 Test EditionFor more information, visit the following Microsoft Web site:
  http://msdn.microsoft.com/en-us/teamsystem/dd408381.aspx

With these Microsoft test tools you can stress test your Web server to see how it reacts when several hundred users access your application at peak times. These tools can also be used to test the server-side components for performance, locks, and other scalability issues. A Web application that relies on databases can also be tested on parameters such as concurrency, transactions, number of users, locks, pooling, and so forth. These Microsoft Performance test tools are invaluable to those developing in Microsoft languages.

Details

This tool helps you understand the quality of the Internet connection between your environment and Microsoft Online Services. It does not measure your environment compatibility with Microsoft Online Services. The tool performs three tests:

• Speed: This test measures your actual download and upload speeds, quality of data, and TCP efficiency. It uses TCP/20000 for download testing and TCP/20001 for upload testing.
• Route: This test validates your connection quality, including packet loss, latency, round trip, and ISP peering points. It uses Internet Control Message Protocol (ICMP).
• Capacity: This test measures your potential maximum download and upload speeds. It uses UDP/8090.

These tests ensure that both the application software and hardware is capable of suporting the required volume of users and system transactions.

With many websites now supporting a number of primarly business critical functions such as e-commerce, HR, self service and online data capture functions it is vital to ensure these applications are available to users and offer adequate performance. Failure to ensure this will drive away users resulting in poor take-up, lost revenue and insufficient benefit realisation.

In addition many search engines such as Google now rank websites by performance and user response and this is a core element of good Search Engine Optimisation (SEO), Web Design London and is a key element of SEO Consulting.

Keywords: application performance testing consulting, application test consultants, software test consultants, software test consulting,test consultants,test consulting